US8505438B2 - Cylinder liner and method of manufacturing the same - Google Patents
Cylinder liner and method of manufacturing the same Download PDFInfo
- Publication number
- US8505438B2 US8505438B2 US12/646,757 US64675709A US8505438B2 US 8505438 B2 US8505438 B2 US 8505438B2 US 64675709 A US64675709 A US 64675709A US 8505438 B2 US8505438 B2 US 8505438B2
- Authority
- US
- United States
- Prior art keywords
- cylinder liner
- engraved
- weight
- parts
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/004—Cylinder liners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
- B22D13/023—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis the longitudinal axis being horizontal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/4927—Cylinder, cylinder head or engine valve sleeve making
Definitions
- the present invention relates to a cylinder liner and a method of manufacturing the cylinder liner.
- cylinders are hollow cylindrical parts in which pistons are guided to reciprocate in internal combustion engines for vehicles.
- typical cylinders are cylinders used in reciprocating compressors and cylinders used in oil pressure, hydraulic, and pneumatic machines.
- an engine equipped with one cylinder is called a single-cylinder engine.
- multi-cylinder engines are classified into an in-line type engine, a V-type engine, an opposed engine, and a radial engine, in accordance with the arrangement type of cylinders.
- a cylinder block In the multi-cylinder engines, there is an engine having an integral structure by casting several cylinder parts into one block, which is called a cylinder block.
- a part that is a relatively thin cylindrical tube that is inserted to provide a reciprocation surface for a piston reciprocating therein, when the guide reciprocation surface for the piston formed by directly machining above structure is insufficient in strength and durability is called a cylinder liner.
- a predetermined number of cylinder liners are arranged in a mold in accordance with the displacement of an engine and then integrally formed with the cylinder block by pouring molten metal of a block material, by integral casting.
- the gap between a pair of adjacent cylinder liner in the plurality of cylinder liners arranged in the cylinder block is called a bore gap.
- a cylinder liner in the related art is schematically described below.
- a cylinder liner in the related art grooves are formed on the surface of an coating material particularly in the process of applying the coating material to a mold in the manufacturing process, molten metal for a cylinder liner is poured into the surface of the coating material, the poured molten metal covers the surface of the coating material and permeates the grooves, and the molten metal is solidified after a predetermined time, and as a result, a parent body of the cylinder liner is completed.
- the parent body of the cylinder liner is drawn out of the mold and the coating material on the outer surface is removed, such that a cylinder liner 5 having predetermined protrusions 5 a throughout the outer surface is completed.
- a cylinder block integrally formed with the cylinder liner is completed by pouring again cylinder liner 5 in a mold for manufacturing a cylinder block and pouring molten metal of a block material, into the mold by integral casting.
- Cylinder liners 5 integrally formed with the cylinder block are strongly combined with the cylinder block by protrusions 5 a on the outer surfaces.
- the cylinder liner in the related art, can be strongly combined with a cylinder block by protrusions formed on the outer surface, whereas the cylinder liner is thick and the size of a bore gap correspondingly increases, such that there is a problem that the size and weight of an engine increase.
- the protrusions on the outer surface of the cylinder lines interferes with the flow of the molten metal of a block material that is inserted in the mold, such that there is a problem that the time for manufacturing the cylinder block increases with the decrease of the overall fluidity of the block material and inferior quality may be caused by long-time solidification.
- Various aspects of the present invention are directed to provide a cylinder liner and a method of manufacturing the cylinder liner, which make it possible to improve bonding strength and thermal conductivity between the cylinder block and the cylinder liner in forming a cylinder block, reduce the thickness of the cylinder liner and a bore gap as much as possible, and minimize the entire size and weight of an engine, by forming a plurality of engraved grooves throughout the outer surface of the cylinder liner.
- another aspect of the present invention is directed to provide a cylinder liner and a method of manufacturing the cylinder liner that make it possible to minimize inferiority ratio of a product by quickly solidifying a block material while considerably reducing the time for manufacturing a cylinder block, by removing factors interfering with the flow of the block material between cylinder liners to improve fluidity of the block material.
- Various aspects of the present invention are directed to provide a cylinder liner having an outer surface covered by casting metal when a cylinder block is manufactured by integral casting, in which a plurality of engraved grooves is formed throughout the outer surface of the cylinder liner to increase bonding force between the casting metal and the outer surface of the cylinder liner.
- the cylinder liner of the present invention further includes a metal layer for improving thermal conductivity while covering the outer surface of the engraved grooves.
- the engraved groove is formed to be depressed inside from the outer surface of the cylinder liner such that the upper portion is wide and the lower portion is narrow.
- the engraved grooves are distributed by thirty to three hundreds per area of 20 mm ⁇ 20 mm of the outer surface of the cylinder liner.
- the engraved groove has a diameter of 0.7 ⁇ 0.2 mm at the upper end and a depth of 0.4 ⁇ 0.2 mm.
- the metal layer is formed by electric arc spraying that uses a plurality of wires.
- the metal layer is made of the same material as the cylinder block, or aluminum or an aluminum alloy.
- the aluminum alloy component of the metal layer contains 11 ⁇ 13 parts by weight of silicon to 100 parts by weight of aluminum.
- the component of the aluminum alloy further contains any one, or two or more of 0.001 ⁇ 0.3 parts by weight of copper, 0.001 ⁇ 0.8 parts by weight of iron, 0.001 ⁇ 0.1 parts by weight of magnesium, 0.001 ⁇ 0.15 parts by weight of manganese, 0.001 ⁇ 0.2 parts by weight of zinc, and 0.001 ⁇ 0.008 parts by weight of beryllium, to 100 parts by weight of aluminum.
- the metal layer has a 50 ⁇ 200 ⁇ m thickness.
- an other aspect of the present invention is directed to provide method of manufacturing a cylinder liner including: coating a coating material onto the inner circumferential surface of a mold rotating and drying the coating material for a predetermined time; applying an engraved-groove forming material to engrave the surface of the coating material; forming a cylinder liner parent body by pouring and solidifying molten metal through the surface of the coating material where the engraved-groove forming material is applied; and roughening the outer surface of the cylinder liner with a plurality of engraved grooves for spraying, after drawing the cylinder parent body out of the mold and removing the coating material and the engraved-groove forming material covering the outer surface of the cylinder liner parent body.
- the method further includes forming a metal layer on the outer surface of the cylinder liner with the plurality of engraved grooves to improve thermal conductivity.
- the engraved groove is formed to be depressed inside from the outer surface of the cylinder liner such that the upper portion is wide and the lower portion is narrow.
- the engraved grooves are distributed by thirty to three hundreds per area of 20 mm ⁇ 20 mm of the outer surface of the cylinder liner.
- the engraved groove has a diameter of 0.7 ⁇ 0.2 mm at the upper end and a depth of 0.4 ⁇ 0.2 mm.
- the metal layer is formed by electric arc spraying that uses a plurality of wires.
- the metal layer is made of the same material as the cylinder block, or aluminum or an aluminum alloy.
- the component of the metal layer contains 11 ⁇ 13 parts by weight of silicon to 100 parts by weight of aluminum.
- the aluminum alloy component of the metal layer further contains any one, or two or more of 0.001 ⁇ 0.3 parts by weight of copper, 0.001 ⁇ 0.8 parts by weight of iron, 0.001 ⁇ 0.1 parts by weight of magnesium, 0.001 ⁇ 0.15 parts by weight of manganese, 0.001 ⁇ 0.2 parts by weight of zinc, and 0.001 ⁇ 0.008 parts by weight of beryllium, to 100 parts by weight of aluminum.
- the metal layer has a 50 ⁇ 200 ⁇ m thickness.
- the present invention it is possible to improve bonding strength and thermal conductivity between the cylinder block and the cylinder liner in forming a cylinder block, reduce the thickness of the cylinder liner and a bore gap as much as possible, and minimize the entire size and weight of an engine, by forming a plurality of engraved grooves throughout the outer surface of the cylinder liner.
- another aspect of the present invention is directed to minimize inferiority ratio of a product by quickly solidifying a block material while considerably reducing the time for manufacturing a cylinder block, by removing factors interfering with the flow of the block material between cylinder liners to improve fluidity of the block material.
- FIG. 1 is a view showing that protrusions are formed on the outer surface of a cylinder liner according to the related art.
- FIG. 2 is a perspective view showing a cylinder liner according to an embodiment of the present invention.
- FIG. 3 is a cross-sectional view showing a cylinder liner according to the present invention.
- FIG. 4 is a cross-sectional view showing a cylinder liner according to the present invention which is disposed in a mold as a parent body.
- FIGS. 5 to 9 are views illustrating a method of manufacturing a cylinder liner according to the present invention, in which FIG. 5 is a view illustrating a process of applying a coating material in a mold,
- FIG. 6 is a view illustrating a process of pouring a molten metal into the mold
- FIG. 7 is a view illustrating a process of drawing a cylinder liner parent body out of the mold
- FIG. 8 is a view illustrating a process of roughening the outer surface of the cylinder liner with the coating material and engraved-groove forming material removed, and
- FIG. 9 is a view illustrating a process of spraying for forming a metal layer on the outer surface of the cylinder liner.
- FIG. 10 is a view showing a cylinder block that has been manufactured by integral casting, using a cylinder liner according to the present invention.
- a cylinder liner according to an embodiment of the present invention is bonded to a cylinder block 10 for an internal combustion engine, in which a plurality of engraved grooves 21 for increasing the bonding force between a casting metal (block material) and a cylinder liner 20 and a metal layer 22 for improving thermal conductivity between cylinder block 10 and cylinder liner 20 are formed by pouring the casting metal throughout the outer surface 20 a of cylinder liner 20 having an outer surface that is covered by the casting metal by pouring cast, in order to manufacture cylinder block 10 .
- engraved grooves 21 are depressed inside from smooth outer surface 20 a of cylinder liner 20 such that the upper portion is wide and the lower portion is narrow.
- engraved grooves 21 having the wide upper portion and the narrow lower portion engraved grooves having other structures that can improve the bonding strength between cylinder block 10 and cylinder liner 20 can be implemented, such as an engraved groove having the narrow upper portion and the wide lower portion, opposite to the above structure.
- the metal layer 22 is formed by electric arc spraying that uses a plurality of wires.
- the electric arc spraying may be general spraying in which two pieces of wire 120 made of an aluminum alloy are applied to wire guides 111 of a spray 110 through feeding rollers 130 , and at the same time, the front ends of the wires 120 are molten by arc generated by electric power applied from an electric source composed of the wires 120 , and then the molten metal is poured forward at high pressure by an air compressor 140 such that a desired metal layer 22 is formed on outer surface 20 a of cylinder liner 20 .
- Metal layer 22 is made of an aluminum alloy and the aluminum alloy component of metal layer 22 contains 11 ⁇ 13 parts by weight of silicon to 100 parts by weight of aluminum.
- the aluminum alloy component contains metal layer 22 contains 11 ⁇ 13 parts by weight of silicon to 100 parts by weight of aluminum, and may contain any one, or two or more of 0.001 ⁇ 0.3 parts by weight of copper, 0.001 ⁇ 0.8 parts by weight of iron, 0.001 ⁇ 0.1 parts by weight of magnesium, 0.001 ⁇ 0.15 parts by weight of manganese, 0.001 ⁇ 0.2 parts by weight of zinc, and 0.001 ⁇ 0.008 parts by weight of beryllium.
- metal layer 22 sprayed as described above has a 50 ⁇ 200 ⁇ m thickness.
- metal layer 22 may be made of the same material as cylinder block or aluminum, other than the aluminum alloy.
- a predetermined coating material 40 is provided and coated on the inner circumferential surface of a mold 30 rotating, and then dried for a predetermined time.
- the operation of applying coating material 40 is performed by a specific coating material coating machine 80 that applies coating material 40 throughout the inner circumferential surface of mold 30 rotating.
- an engraved-groove forming material 50 for engraving shown in FIG. 4 is applied onto the surface of coating material 40 coated and dried on the inner circumferential surface of mold 30 .
- Coating material 40 can be bonded by the centrifugal force by the rotation of mold 30 and the bonding force of coating material 40 .
- a cylinder liner parent body 15 shown in FIG. 7 is formed by, as shown in FIGS. 4 and 6 , pouring molten metal 60 for a cylinder liner into the surface of coating material 40 coated with engraved-groove forming material 50 and then solidifying molten metal 60 for a predetermined time.
- Reference numeral ‘150’ not stated in FIG. 6 designates a molten metal injector for pouring molten metal 60 for cylinder liner.
- cylinder liner parent body 15 is drawn out of mold 30 , as shown in FIG. 8 , coating material layer 40 and engraved-groove forming material 50 covering the outer side of parent body 15 are removed, and then, the outer surface of cylinder liner 20 is roughened for spraying, by a roughening machine 100 .
- cylinder liner 20 having engraved grooves 21 and metal layer 22 on the outer surface is finally completed by performing the spraying to outer surface 20 a of cylinder liner 20 roughened by spray 110 .
- Reference numeral ‘90’ not stated in FIG. 8 designates a drawer that draws cylinder liner parent body 15 out of mold 30 .
- engraved grooves 21 are formed to be depressed inside from the smooth outer surface 20 a of cylinder liner 20 , in which each of engraved grooves has a wide upper portion and a narrow lower portion. Further, thirty to three hundreds of engraved grooves 21 are distributed per 20 mm ⁇ 20 mm on outer surface 20 a of cylinder liner 20 to have a diameter of 0.7 ⁇ 0.2 mm and a depth of 0.4 ⁇ 0.2 mm.
- metal layer 22 made of an aluminum alloy having a 50 ⁇ 200 ⁇ m thickness is applied again onto the surface of engraved grooves 21 .
- a predetermined number of cylinder liner 20 completed as described above is disposed in a mold (not shown) for manufacturing cylinder block 10 in accordance with the displacement of a desired engine and molten metal of a block material is poured by integral casting.
- the block material is uniformly diffused inside the mold and covers the entire outer surface of cylinder liner 20 coated with metal layer 22 while permeating engraved grooves 21 of outer surface 20 a of cylinder liner 20 , and in this state, the block material is solidified for a predetermined time and a desired cylinder block 10 is completed.
- Integral cylinder block 10 with cylinder liner 20 completed as described above has an integral structure having high bonding strength by engraved grooves 21 between cylinder block 10 and cylinder liner 20 . Further, cylinder block 10 has high thermal conductivity by metal layer 22 and it is possible to reduce the bore gap between adjacent cylinder blocks 10 as much as possible.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Coating By Spraying Or Casting (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims (10)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080135601A KR101125299B1 (en) | 2008-12-29 | 2008-12-29 | Cylinder liner and method for manufacturing thereof |
KR10-2008-0135601 | 2008-12-29 | ||
KR20090028575A KR101509769B1 (en) | 2009-04-02 | 2009-04-02 | Method for manufacturing cylinder liner |
KR10-2009-0028575 | 2009-04-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20100162886A1 US20100162886A1 (en) | 2010-07-01 |
US8505438B2 true US8505438B2 (en) | 2013-08-13 |
Family
ID=42221087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/646,757 Active 2032-06-12 US8505438B2 (en) | 2008-12-29 | 2009-12-23 | Cylinder liner and method of manufacturing the same |
Country Status (4)
Country | Link |
---|---|
US (1) | US8505438B2 (en) |
JP (1) | JP5666127B2 (en) |
CN (1) | CN101769211B (en) |
DE (1) | DE102009055358B4 (en) |
Cited By (3)
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US20150122118A1 (en) * | 2012-11-29 | 2015-05-07 | Guangdong Zhaoqing Power Accessories Co., Ltd. | Cylinder liner and preparation method thereof |
US20170328299A1 (en) * | 2016-05-13 | 2017-11-16 | Hyundai Motor Company | Cylinder liner for insert casting and method for manufacturing the same |
US11098672B2 (en) | 2019-08-13 | 2021-08-24 | GM Global Technology Operations LLC | Coated cylinder liner |
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KR101534864B1 (en) * | 2009-06-30 | 2015-07-08 | 현대자동차주식회사 | Manufacturing method for cylinder liner of vehicle |
CN102371351A (en) * | 2010-08-20 | 2012-03-14 | 宝馨实业股份有限公司 | High silicon-containing aluminum alloy bushing and manufacturing method thereof |
CN103890220B (en) * | 2011-09-07 | 2017-05-17 | 费德罗-莫格尔公司 | Cylinder liner with a thermal barrier coating |
BR102013031969A8 (en) * | 2013-12-12 | 2015-12-15 | Mahle Int Gmbh | cylinder liner of an internal combustion engine |
US10094325B2 (en) * | 2014-01-28 | 2018-10-09 | ZYNP International Corp. | Cylinder liner |
JP2016089744A (en) * | 2014-11-06 | 2016-05-23 | スズキ株式会社 | Cylinder sleeve |
US20160222907A1 (en) * | 2015-01-29 | 2016-08-04 | Mahle Inc. | Cross Hatch Liner Grooves |
US10344861B2 (en) * | 2015-04-24 | 2019-07-09 | Caterpillar Inc. | Hammer having composite piston sleeve |
US10215128B2 (en) * | 2016-04-27 | 2019-02-26 | Mahle International Gmbh | Rough cast cylinder liner |
CN109642306A (en) * | 2016-07-13 | 2019-04-16 | 欧瑞康美科股份公司,沃伦 | Cylinder perforation is coated in the case where no preactivated surface |
JP7264822B2 (en) * | 2017-03-22 | 2023-04-25 | アカーテース パワー,インク. | Cylinder bore surface structure of opposed piston engine |
CN107639214B (en) * | 2017-07-25 | 2019-08-20 | 中原内配集团安徽有限责任公司 | A kind of aluminium-plated type cylinder sleeve of outer circle |
JP6984289B2 (en) * | 2017-10-03 | 2021-12-17 | スズキ株式会社 | Casting and packaging members and their manufacturing methods |
US20190323448A1 (en) * | 2018-04-19 | 2019-10-24 | GM Global Technology Operations LLC | Cylinder liner for internal combustion engine and method for making cylinder liner |
CN111535932A (en) * | 2020-05-14 | 2020-08-14 | 扬州大学 | Cavitation-resistant cylinder sleeve added with titanium-nickel-tungsten carbide coating and preparation method thereof |
CN112222781B (en) * | 2020-10-10 | 2023-04-11 | 梅赛德斯-奔驰集团股份公司 | Method for treating inner surface of cylinder and member manufactured by the method |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150122118A1 (en) * | 2012-11-29 | 2015-05-07 | Guangdong Zhaoqing Power Accessories Co., Ltd. | Cylinder liner and preparation method thereof |
US9500282B2 (en) * | 2012-11-29 | 2016-11-22 | Guangdong Zhaoqing Power Accessories Co., Ltd. | Cylinder liner and preparation method thereof |
US20170328299A1 (en) * | 2016-05-13 | 2017-11-16 | Hyundai Motor Company | Cylinder liner for insert casting and method for manufacturing the same |
US10145330B2 (en) * | 2016-05-13 | 2018-12-04 | Hyundai Motor Company | Cylinder liner for insert casting and method for manufacturing the same |
US11098672B2 (en) | 2019-08-13 | 2021-08-24 | GM Global Technology Operations LLC | Coated cylinder liner |
Also Published As
Publication number | Publication date |
---|---|
JP2010156050A (en) | 2010-07-15 |
CN101769211B (en) | 2014-03-26 |
DE102009055358A1 (en) | 2010-07-01 |
JP5666127B2 (en) | 2015-02-12 |
US20100162886A1 (en) | 2010-07-01 |
CN101769211A (en) | 2010-07-07 |
DE102009055358B4 (en) | 2022-01-13 |
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